84162000781 has 4 divisors (see below), whose sum is σ = 86876904064. Its totient is φ = 81447097500.

The previous prime is 84162000763. The next prime is 84162000899. The reversal of 84162000781 is 18700026148.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84162000781 - 2¹¹ = 84161998733 is a prime.

It is a super-2 number, since 2×84162000781² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84162000781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84162000721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1357451595 + ... + 1357451656.

It is an arithmetic number, because the mean of its divisors is an integer number (21719226016).

Almost surely, 2^84162000781 is an apocalyptic number.

It is an amenable number.

84162000781 is a deficient number, since it is larger than the sum of its proper divisors (2714903283).

84162000781 is a wasteful number, since it uses less digits than its factorization.

84162000781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2714903282.

The product of its (nonzero) digits is 21504, while the sum is 37.

The spelling of 84162000781 in words is "eighty-four billion, one hundred sixty-two million, seven hundred eighty-one", and thus it is an aban number.